Centralization of management in SDN involves monitoring individual net-work elements, the state of individual elements and their groups or part of the network, as a rule, are functionally dependent, despite the fact that the relevant agents are arranged in such a way as to obtain the maximum amount of informa-tion. For example, the increase in traffic in either direction can overload some routers, and the output of one of them requires the allocation of network re-sources. In this connection it is of great interest to estimate interrelated states that, in accordance with the theory of systems allows to find.